Natural occurrence of Azospirillum brasilense in petunia with capacity to improve plant growth and flowering.

To evaluate the natural occurrence of the plant growth-promoting bacterium Azospirillum brasilense and petunia plants, local strains were isolated and characterized by biochemical and molecular methods. Three strains were assessed in greenhouse conditions using Petunia × hybrida Ultra™. Treatments: Plants without bacterial inoculation or chemical fertilization; fertilized with NPK and KNO ; and independently inoculated with the strains 2A1, 2A2, and 2E1 by submerging their roots in a bacterial suspension (~10  CFU·ml ).

Genome Sequence of Azospirillum brasilense REC3, Isolated from Strawberry Plants.

The genome sequence of a plant growth-promoting bacterium and biocontrol agent, REC3, isolated from strawberry roots, is reported here. The REC3 total genome contains 7,229,924 bp and has a G+C content of 68.7 mol%.